Publications
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Newsletters: a weekly summary of news about Bitcoin and LN development.
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Blog posts: Occasional updates and reference material from the Optech team.
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Podcast Episodes: Audio discussions of our newsletters.
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Bitcoin Optech Newsletter #342
This week’s newsletter describes an idea for allowing mobile wallets to settle LN channels without extra UTXOs and summarizes continued discussion about adding a quality-of-service flag for LN pathfinding. Also included are our regular sections describing recent changes to clients, services, and popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #341 Recap Podcast
Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #341.
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Bitcoin Optech Newsletter #341
This week’s newsletter summarizes continued discussion about probabilistic payments, describes additional opinions about ephemeral anchor scripts for LN, relays statistics about evictions from the Bitcoin Core orphan pool, and announces an updated draft for a revised BIP process. Also included are our regular sections summarizing a Bitcoin Core PR Review Club meeting, announcing new releases and release candidates, and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #340 Recap Podcast
Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Morehouse, Johan Halseth, Pieter Wuille, Sergi Delgado, Bastien Teinturier, Oleksandr Kurbatov, Antoine Poinsot and Bob McElrath to discuss Newsletter #340.
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Bitcoin Optech Newsletter #340
This week’s newsletter announces a fixed vulnerability affecting LDK, summarizes discussion about zero-knowledge gossip for LN channel announcements, describes the discovery of previous research that can be applied to finding optimal cluster linearizations, provides an update on the development of the Erlay protocol for reducing transaction relay bandwidth, looks at tradeoffs between different scripts for implementing LN ephemeral anchors, relays a proposal for emulating an
OP_RANDopcode in a privacy-preserving manner with no consensus changes required, and points to renewed discussion about lowering the minimum transaction feerate. -
Bitcoin Optech Newsletter #339 Recap Podcast
Mark “Murch” Erhardt and Dave Harding are joined by Matt Morehouse and 0xB10C to discuss Newsletter #339.
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Bitcoin Optech Newsletter #339
This week’s newsletter describes a vulnerability affecting older versions of LDK, looks at a newly disclosed aspect of a vulnerability originally published in 2023, and summarizes renewed discussion about compact block reconstruction statistics. Also included are our regular sections summarizing popular questions on the Bitcoin Stack Exchange, announcing new releases and release candidates, and describing recent changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #338 Recap Podcast
Mark “Murch” Erhardt and Mike Schmidt are joined by Andrew Toth and Dave Harding to discuss Newsletter #338.
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Bitcoin Optech Newsletter #338
This week’s newsletter announces a draft BIP for referencing unspendable keys in descriptors, examines how implementations are using PSBTv2, and corrects in depth our description last week of a new offchain DLC protocol. Also included are our regular sections describing changes to services and client software, announcing new releases and release candidates, and summarizing recent changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #337 Recap Podcast
Mark “Murch” Erhardt and Mike Schmidt are joined by vnprc to discuss Newsletter #337.
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Bitcoin Optech Newsletter #337
This week’s newsletter summarizes continued discussion about rewarding pool miners with tradeable ecash shares and describes a new proposal for enabling offchain resolution of DLCs. Also included are our regular sections announcing new releases and release candidates and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #336 Recap Podcast
Mark “Murch” Erhardt and Mike Schmidt are joined by Abubakar Sadiq Ismail, Gregory Sanders, and Daniel Roberts to discuss Newsletter #336.
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Bitcoin Optech Newsletter #336
This week’s newsletter describes a potential change to Bitcoin Core affecting miners, summarizes discussion about creating contract-level relative timelocks, and discusses a proposal for an LN-Symmetry variant with optional penalties. Also included are our regular sections announcing new releases and release candidates and summarizing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #335 Recap Podcast
Dave Harding and Mike Schmidt are joined by Yuval Kogman, Jeremy Rubin, and Steve Myers to discuss Newsletter #335.
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Bitcoin Optech Newsletter #335
This week’s newsletter links to information about longstanding deanonymization vulnerabilities in software using centralized coinjoin protocols and summarizes an update to a draft BIP about the ChillDKG distributed key generation protocol compatible with scriptless threshold signing. Also included are our regular sections summarizing discussion about changing Bitcoin’s consensus rules, announcing new releases and release candidates, and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #334 Recap Podcast
Mark “Murch” Erhardt and Mike Schmidt are joined by Dave Harding, Niklas Gögge, Gloria Zhao, and Rearden to discuss Newsletter #334: 2024 Year-in-Review Special.
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Bitcoin Optech Newsletter #334: 2024 Year-in-Review Special
The seventh annual Bitcoin Optech Year-in-Review special summarizes notable developments in Bitcoin during all of 2024. -
Bitcoin Optech Newsletter #333 Recap Podcast
Mark “Murch” Erhardt and Mike Schmidt are joined by Dave Harding, /dev/fd0, and Gloria Zhao to discuss Newsletter #333.
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Bitcoin Optech Newsletter #333
This week’s newsletter describes a vulnerability that allowed stealing from old versions of various LN implementations, announces a deanonymization vulnerability affecting Wasabi and related software, summarizes a post and discussion about LN channel depletion, links to a poll for opinions about selected covenant proposals, describes two types of incentive-based pseudo-covenants, and references summaries of the periodic in-person Bitcoin Core developer meeting. Also included are our regular sections summarizing a Bitcoin Core PR Review Club meeting, listing changes to services and client software, linking to popular Bitcoin Stack Exchange questions and answers, announcing new releases and release candidates, and describing notable changes to popular Bitcoin infrastructure software.
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Channel Depletion Research Deep Dive Podcast
Dave Harding and Mike Schmidt are joined by René Pickhardt and Christian Decker to discuss Pickhardt’s Lightning Network channel depletion research.
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